MyAnna Buring has joined the cast of 'Downton Abbey'.

The 'Twilight Saga' actress - who plays Tanya Denali in the last two movies of the vampire franchise - has landed the role of feisty servant Edna in the ITV period drama, and she admits she is delighted to be part of it.

She said: "You couldn't get two projects more different. I was thrilled with the 'Downton' offer came."

Simone Lahbib - best known for her role in 'Bad Girls' - has also joined the series as a servant.

'Downton Abbey' has been a huge success since it began in September 2011 featuring an all star cast including Hugh Bonneville, Dame Maggie Smith and Jessica Brown Findlay.

Legendary actress Shirley MacLaine - who won an Academy Award in 1984 for her performance in 'Terms of Endearment' - is also set to appear in the forthcoming third series of the show as a character named Martha Levinson, the mother of Elizabeth McGovern's character Lady Grantham.

ITV's Director of Drama Laura Mackie said at the time: "It is so exciting to have an actress of Shirley MacLaine's stature joining our brilliant 'Downton Abbey' cast. It's a tribute to the show's success on both sides of the Atlantic."